April 21, 2016
Steve Vick International (SVI) and Northern Gas Networks (NGN), have joined forces and developed the Enhanced S.E.A.L. system; an innovative new method that allows 100% of Tier 1 (T1) gas mains, including the last joint before entering the T2 or T3 main, to be sealed and abandoned.
Gas Distribution Networks are required to abandon or replace all cast iron and ductile T1 pipes within 30m of a...